Small water wheel toy capable of automatically generating electricity

The invention relates to the technical field of hydroelectric generation and discloses an automatic power generation small water wheel toy. The wheel toy comprises a first cylinder, wherein a micro generator is fixedly connected to the upper portion of the first cylinder, a first gear is rotatably connected to the left side of the micro generator, and a transmission rod is fixedly connected to the end, away from the micro generator, of the first gear; a second gear is fixedly connected to the end, away from the first gear, of the transmission rod, a small water wheel is fixedly connected to an end, away from the transmission rod, of the second gear, and a second barrel is fixedly connected to a lower portion of a first barrel. According to the small water wheel toy capable of automatically generating electricity, the small water wheel drives the rotor shaft in the micro generator to rotate through rotation of the second gear, the transmission rod and the first gear, mechanical energy is converted into electri